Skip to main content

how to fix iPhone XS Max Touch Screen Not Working problem - Phonefix

Here is an drop damaged iPhone XS Max, the problem is that the iPhone XS Max screen is not working after dropping. The iPhone screen looks good, but the touch function is not available. We tried reset and restore the iPhone XS Max, but the problem is still there. Now, we suspected the iPhone XS Max has hardware damage.



Firstly, we need to disassemble the iPhone XS Max. Use screwdrivers to remove the screws at the bottom of the screen, and then use LCD sucker to open the screen. Remove the iPhone display assembly, disconnect the iPhone battery, and then remove the iPhone motherboard.

Put the iPhone motherboard under a Black Trinocular Microscope to observe it.

After observation, we saw that the iPhone motherboard is oxidized and corroded. Use PCB cleaner to clean the iPhone motherboard, and then check iPhone motherboard middle layer, it's fine. Now use digital multimeters to measure the iPhone touch connector, when measured the 3 Pin, it's not resistance value, which is abnormal. 

Because the iPhone XS Max was damaged by dropping, so we suspected that the problem is on the connection between the iPhone touch board and RF board, which causes the iPhone touch connector 3 Pin has no resistance value.

Log in to the ZXW online account to check iPhone schematic diagram, the touch connector 3 Pin have 3.5V touch power supply.

Attach the iPhone XS Max motherboard to the SS-601K PCB fixture, and then use hot air gun and tweezers to remove the touch board. Clean it, and then reball it.

Use digital multimeter to measure the iPhone XS Max motherboard, all data measured are normal. Assemble the iPhone Xs Max, and turn it on, test the iPhone XS Max touch screen it works fine, the iPhone touch screen is back to work normally.



Labels:

Comments

Post a Comment

Popular posts from this blog

User Manual: JC V1 Programmer to fix iPhone light sensor/vibrator

As we know, the light sensor and vibrator is very important for iPhone screen. If you want to replace the iPhone screen, you also need to transfer the original screen data to the new iPhone screen(iPhone 8 to iPhone Xs Max),so you can make sure the new iPhone screen will work fine. Here is a  JC V1 programmer  to fix iPhone light sensor and vibrator problem (for iPhone 7- iPhone Xs Max), it also can repair iPhone baseband eeprom IC or iPhone logic eeprom IC problem. The JC V1 Programmer comes with 24-inch HD display screen, three-color LED indicator light, two small connecting seats (for connecting function panel) , two buttons and one function panel (including light sensor/touch connector, baseband function connector, vibration connector) It support 2 languages (Chinese/English) and three lines of code (read/write/burn/save), the function panel can be changed, the software can automatically update What’s the functions? - Repair iPhone Light sensor/ true ...
1 comment
Read more

Essential tools for a phone repair technician Everyday Use

Must-Have tools for a phone repair technician include precision screwdrivers, spudgers, tweezers, suction cups, and heat guns or hair dryers. Additionally, anti-static mats and wrist straps are crucial for protecting sensitive electronics. Other helpful tools include a multimeter, soldering iron, magnifying lamp or microscope, and various cleaning supplies.  Whether you're a DIY enthusiast or a professional technician, having the right tools is crucial for successful phone repair. Here's a breakdown of common phone repair tools, categorized for clarity: I. Essential Opening and Disassembly Tools: Precision Screwdrivers : These are the most fundamental tools. Phones use tiny screws of various types (Phillips, Pentalobe, Torx, Flathead), so a comprehensive set with magnetic tips is highly recommended to avoid stripping screws and losing tiny parts. Spudgers ( Pry Tools ): Made of plastic or nylon, these non-conductive tools are invaluable for safely prying open phone casings...
Post a Comment
Read more

How to restore & unlock the apple watch series 1, 2, 3, 4, 5, and 6?

  Can you always remember your password? What should you do when there is a red exclamation error on your Apple watch after update you iWatch？6 IN 1   AWRT iBus   Tools, a professional Apple Watch recovery tool, enables you to unlock, repair and remove the exclamation error easily.   Why choose the AWRT iBus tool? Perhaps you would tell me Apple support team can solve the trouble. While they may help, you may not be patient enough because you want your watch fixed immediately. Moreover, you don't have to wait for too long for them to help you solve the issues. 1. This incredible device has an inbuilt original restore adapter for the apple watch of the series S1, S2, S3, S4, S5, and S6 42 mm and 38 mm /$199. There are also S1-just 38MM /$39.99, Adapter for S1-42mm 38mm /$139.99, or Adapter for S2 S3 - 42mm 38mm /$169.99 version for choosing. The tool requires professional Apple Watch Firmware  IPSW File  for iWatch S1-S6. 2. Moreover, the iBus tool has a lot...
Post a Comment
Read more